Improvement in boring-machines



EMMETT QUINN, OF WASHINGTON, DISTRICT OF COLUMBIA.

IMPROVEMENT IN. BORING-MACHINES.

Specification formingpart of Letters Patent No. iy, dated March 27, 1866.

\ To all whom it may concern.'

Be it known that I, EMME'r'r QUINN, of the city ot' Vashington, District of' Columbia, have invented a new and Improved Machine for Boring Tubing of' Vood; and I do hereby declare the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature ot' this invention is in the construction ot' a machine tor boring tubing, and which, by cutting an annular space within the tube being formed, and allowing a core to be taken therefrom, enables the operator to make out ot' one piece ot' timber several tubes of a different diameter, but all of the entire length ot the said timber.

The machine consists ot' a hollow mandrel mounted in boxes, supported on a suitable trame, and supporting on one end a long hollow cylinder concentric therewith, to the outer end ot' which a cutter-head is attached. Passing 1n the rear of the mandrel is a pipe, the inner end ot which is inserted in a hollow hub in the center of the cylinder at the place of its connection with the mandrel. From this hub two hollowarms radiate in opposite direc tions, and, passing through the cylinder, com niunicate with a hollow collar or ring surrounding the cylinder at this point. Connected with this collar, on opposite sides ot' the cylinder, are two tubes, either straight or spiral, extending longitudinally with the cylinder to the rear of the cutter-head and immediately in front ot' the orifice, through which pass the chips made by the cutters. Through these tubes, so arranged, water is forced, which, mixing up with the chips,treadily iintls its exit, carrying the chips with it between the inside of the tubing so being formed and the outside ot' the cylinder, the spiral shape ofthe outer tubes or pipes assisting in the operation, and for this reason are to be preferred to the straight.

A represents the 'lranie upon which the cylinder 1S, attached to the inandrel,is supported by the boxes a a.. The water to the cutters is conveyed, through the pipe bin the rear ot' the cylinder, to the hollow hub c, thence t-hrough the ra tial arms a a into the hollow collar or ring e, to which are connected the spiral or straight tubes fj', which, extending from the rings Jforward to the cutter-head g, discharge the water immediately in front oi' the oritce through which pass the chips or dust made by the cutters. These latter maybe formed in many ways; but as they are no part of thein- Vention, and are shown in Figure l, adescription thereof is considered unnecessary.

[t is evident that a single tube extending the whole length ot' the cylinder and centrally within it, as s'lown in Fig. 3, would answer the saine purpe'lharging the chips-as shown in the machine herein described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The employnient,in a machine for boring wooden tubes, of one or more pipes conveying water to the cutters, w'liereby the chips made by the cutters are discharged from the machine by the force ot' the water, when constructed and operating substantially as described.

EMMETT QUINN.

Vitnesses J ouN S. HoLLrNGsHEAD, JOHN D. BLooR. 

